1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8030862154a3b318ab2ce1dc9092377a38bc4a44578176b68678b83120577eb. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0626e752-abc9-4c26-812c-205c3e7c3afc.json and https://artists.proofprofile.net/proofs/artist/0626e752-abc9-4c26-812c-205c3e7c3afc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96cb59d76622ddfcc346b933a8e5ff15abebaea05d4473d9a07b1bdd8d0562d. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GXH2J2590137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b5220ab89675d7eadda6168f8a5de92943a882e82db4ef19df820329fbf823. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GXH2J2587510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe2d16aebd878ac3ed6dbaa3791855b66fcf53b6f776c450551dc3e78cbef57. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GXH2J2587920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9737681f4262624e0ee9d519731c260f027264dc252f3f3e1ffac31e933d36. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GXHAF2545927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0efd302ff6ce6786b27520b0ff58c5667e6d4b52e3dac15a75725ed9a68c4191. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GXHAF2545928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374c7a68b5336555a63a9643b21a1bb6ad199737382933708c6098b3bc0facc1. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GXHAF2545929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72b3c5ded5a630ff2f7f3f75ab606fc38e621535454704d099cf191b256f34ab. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GXHAF2545930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf0bacd1ac36e62cfc8b3de04221ea5ce70770ff87d84eca6ee3d959069c5ece. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GXHAF2545931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f0aac02d123a2649871281cb320ef37232b5f02a7650cb926cfbfb9f4e0153b. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:55:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GXHAF2545932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b4f38d2f973b55bc3b64a3f6d9cbae2b4d5d3901a64c072b298e0f03650d2b. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GXHAF2545933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93fca7152fb3f1cbf80da25b2966f4e503588e0372dd59a277f9466a8af0752b. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GXHAF2545934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1024baa533302c5531469126afa006f6275bad99515d1ffa316e67d579d85a3d. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GXHAF2545935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad8c429ab31ebbe4690cf0100fcae3f8c90a4d05344234e5425a65ddc2f478a. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GXHAF2545936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7e65f39f1885f78817e687ad3edf337ca9eb3ae1fcd352a91ca0c50c15eb8c. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GXHAF2545937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x707e3b3cc9da8ea0f99737c3e08e3ed5b32c5d8dfa1f3d3040f18338ef2646b4. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GXHAF2545938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf09d259e0618c2241c419d28e1af0c98bcb1e623b1c2d5daeb68decb295dff4. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GXHAF2545939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8825e2ffec03bf009309fce8b73fe99001b164228329b570b87918d998f6dd39. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GXHAF2545940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b4a71ae07409b2e8acf528aa1087a651a1a700954a9937c08c8f2efecd59ad. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GXHAF2545941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad5dc55a68cbf41c27ee9a34955a63f1c48e53dc9c1a0f6784b69cb7b3dc133. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GXHAF2545942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a6f4e78baf8db7de602af8703e1d2eb42e6385abc26cd623676df12c0954cf. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T11:36:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GXHAF2545943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe82821da5b490f8e2a97af7cf9a812ff877464aad08b3a4452ac26d3cc366abe. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GXHAF2545944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca34f83a8e589a97a04a5745c304f62c15e3c86b9a1130c1028b2f9e7c22f0b7. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GXHAF2545945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa89f8a66b08cf32aab11db2f0ca80f17a56fc8eb6c08e97f573b81e1a78d8745. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GXHAF2545946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd248e885bd54fadf4b12b482bab7f463481b0a8a3df8eec77946d8c2e01e4265. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GXHND2515599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6caf670498e89a91eb7d413e02cff8a72584ff2ddb741e0ec6d36a0fcd9a42bf. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GXHND2515611.